作　　者： ; ; ; ; ; (叶正华）; (马国兰）;

机构地区： 新疆农业科学院

出　　处： 《新疆农业科学》 2013年第9期1583-1590,共8页

摘　　要： 【目的】探索冬油菜在新疆旱寒区密度与施氮量的最佳组合,完善高产配套技术。【方法】在油菜各生育期调查不同密度和氮肥施用条件下冬油菜的越冬率,并对不同密度和氮肥施用条件下冬油菜的干物质积累动态和叶面积指数、产量和经济性状等进行测定。【结果】不同密度与氮肥用量水平对冬油菜越冬率、叶面积指数、干物质积累动态及产量构成都有着一定影响,适宜的栽培密度和施氮水平下冬油菜越冬率、叶面积指数、干物质积累动态及产量构成与低密度、不施氮(CK)相比都有相应的增长。【结论】在新疆旱寒区冬油菜密度应控制在60×104株/hm2,施氮量控制在200 kg/hm2能获得相对最农艺性状和最高产量水平。 [ Objective] The optimum combination density with nitrogenous fertilizer of winter rapeseed in Xinjiang drought and cold region was experimented so as to perfect the matching high yield technique. [ Meth- od ] The winter - survival rate of winter rapeseed was investigated and dynamic dry matter accumulations, leaf area index, yield, economic characters under the different densities and nitrogenous fertilizer during the differ- ent times were tested. [ Result] The different density and nitrogenous fertilizer of winter have some effect on the winter - survival rate, leaf area index, dynamic dry matter accumulation, yield of winter rapeseed. The suitable density and nitrogenous fertilizer have the highest winter - survival rate, leaf area index, dynamic dry matter accumulation, yield of the winter rapeseed than the CK. [ Condttsion] The suitable density should becontrolled in 60 thousand plants per hectare, nitrogenous fertilizer should be controlled in 200kg/hm2, which could obtain relatively optimal agronomic traits and the highest yield level in dry and cold areas in Xinjiang, China.

关 键 词： 冬油菜 施氮量 密度 叶面积指数 干物质积累动态 产量

领　　域： [农业科学]